Skip to main content

Agent based cloud scanning

As a part of security assessment of cloud based apps/ infrastructure we always face a challenge in scanning the servers in the cloud. Few of them are:
  • Obtaining/ managing credentials always an headache
  • Not ideal for cloud solutions
  • Requires target machines to be always online
The limitations of the scanners:
  • Traditional infrastructure scanners  such as Nessus are of not much use
  • Sometimes the scanners does not report  vulnerabilities correctly due to many issues such as machines frequently go down while scan is in process, some firewall issues etc
We need a solution which is rather than we scanning the target servers, it resides on the server and keep doing the scanning and sends the report back to the organization periodically. And here comes the concept of 'Agent based clod scanning'. 
The benefits are:
  • Rather than targeting the remote servers in the traditional approach, the agents installed on the servers keep on doing the scans and sends the periodic reports
  • Can run offline and syncs when becomes online
  • It helps reducing the network congestion
  • Enumerates Bluetooth, USB devices and mounted shares
  • Detects malwares and suspicious processes
Nessus recently launched such tool called, Nessus Agents which fulfills above conditions. 
http://www.tenable.com/press-releases/tenable-network-security-introduces-agent-based-scanning-to-2015-product-line-with 

Comments

Popular posts from this blog

File Upload through Null Byte Injection

Sometimes, during file upload we come across situation wherein there would be check on the file extension at the client side as well as server side too. If the application does allow only .jpeg extension to be uploaded, the client side java script checks for the extension of the file before passing the request. We all know that how easily this can be defeated.
Some applications, checks for the extension at the server side also. That's not easy to bypass. However there are some ways with which it still can be bypassed. Most of server side scripts are written in high level languages such as Php, Java etc who still use some C/C++ libraries to read the file name and contents. That leads to the problem. In C/C++ a line ends with /00 or which is called Null Byte. So whenever the interpreter sees a null byte at the end of the a string, it stops reading thinking it has reached at the end of the string.
This can be used for the bypass. It works for many servers, specially php servers. Th…

SQL Injection in search field

Earlier I had written about performing SQL injection in search field and how to do a DoS attack and privilege escalation using 'Like' operators. Now another SQLi exploitation I came across recently. That too in the search field. This becomes important as lots of people don't pay much attention on the search forms/ fields in the application. My aim is to show that a search form can also be exploited with SQL Injection. The following queries are based on a real world exploitation. The steps and data are for just illustration purpose only. Suppose, the search form provides the details of users who have accessed the application some time and their login time details etc, we just need to provide their name in the search box provided. All the data were being going as Post request. So, to just fingerprint the database, I provide, 'nil'+'esh' in the search field and it successfully gives me the results. That means the database behind the application is concatenat…

Insecure protocols

Some basic insecure protocols and risk associated with them: